1436 results about "Carboxylate" patented technology

The invention discloses a tetranuclear ladder type organic tin carboxylate complex as well as a preparation method and application thereof, and belongs to the technical field of metal complexes, the tetranuclear ladder type organic tin carboxylate complex is prepared by taking para-position or ortho-position substituted benzoic acid as a ligand and taking organic tin dimethyl tin oxide as a substrate. The preparation method is simple to operate and mild in condition. The tetranuclear ladder type organic tin carboxylate complex can be used as a photocatalyst for photocatalytic production of H2O2, and the photocatalytic H2O2 production rate is as high as 5.12 * 10 < 3 > [mu] mol.g <-1 >. H <-1 > and is higher than the H2O2 production rate of a photocatalyst reported in the existing literature.

The invention relates to application of a combined pharmaceutical composition in preparation of a medicine for resisting transforming follicular lymphoma. Active components in the combined pharmaceutical composition comprise a first component and a second component, the first component is selected from any one or a combination of at least two of sitagliflozin, pharmaceutically acceptable salt, isomer, solvate and metabolite of sitagliflozin; and the second component is selected from any one or a combination of at least two of chidamide, pharmaceutically acceptable salts, isomers, solvates and metabolites of the chidamide. Research finds that the combined use of the two active components not only can reduce the dosage of each drug and improve the medication safety, but also has the effect of improving or treating convertible follicular lymphoma more remarkably than that of a single drug active component, and plays a role in synergistic promotion. The invention provides an effective drug combination strategy for improvement or treatment of convertible follicular lymphoma, and has very significant significance.

The invention discloses an electrolyte, an electrochemical device comprising the electrolyte and a vehicle. The electrolyte comprises a solvent, a first additive and a second additive, the solvent comprises chain carboxylic ester, and the first additive comprises a sulfonate compound or / and a sulfate compound; the second additive comprises vinylene carbonate or / and fluoroethylene carbonate. According to the electrolyte disclosed by the invention, the chain carboxylic ester solvent, the first additive containing the sulfonate compound or / and the sulfate compound and the second additive containing the vinylene carbonate or / and the fluoroethylene carbonate are matched for use; the rapid charging capability and the high-temperature cycle performance of a lithium iron phosphate system battery with high safety performance can be improved, and the application of lithium iron phosphate in a power battery is further widened.

The present invention relates to the technical field of surfactants, and discloses a preparation method of a modified polycarboxylate surfactant and its application in pesticide preparations. The present invention uses 3-hexene-1,6-diamine and epichlorohydrin as raw materials, and obtains 1,6-tetraglycidylamine-3-hexene through ring opening and ring closing reactions. 1,6-tetraglycidylamine-3-hexene is used twice to react with sodium bisulfite and phosphoric acid in sequence to obtain tetrasulfonate-based hexene and tetraphosphate-based hexene, and then the two are copolymerized with acrylic acid and methacrylate to obtain a modified polycarboxylate surfactant. The modified polycarboxylate surfactant prepared by the present invention has excellent dispersibility, heat storage stability and high suspension rate.

The invention provides composite anionic cellulose ether as well as a preparation method and application thereof. The composite anionic cellulose ether is prepared by etherifying alkalized cellulose through an etherifying agent A and an etherifying agent B in sequence, the etherifying agent A is selected from water-soluble halogenated alkyl sulfonic acid and / or water-soluble halogenated alkyl sulfonate; the etherifying agent B is selected from water-soluble halogenated alkyl carboxylic acid and / or water-soluble halogenated alkyl carboxylate. According to the composite anionic cellulose ether, a sulfonic acid group and a carboxylic acid group are sequentially introduced, so that the composite anionic cellulose ether has relatively high temperature resistance and salt and calcium resistance; the compound can be used as a filtrate reducer for the drilling fluid, can effectively control the filter loss of the drilling fluid, and can improve the salt pollution resistance of the drilling fluid, especially the calcium and magnesium ion pollution resistance.

The invention discloses a preparation method and application of a composite catalyst for preparing carbon dioxide-based polycarbonate, and belongs to the technical field of catalysts, and the composite catalyst is a binary catalytic system obtained by combining double metal cyanide and activated zinc carboxylate according to a certain proportion. After zinc carboxylate is activated by water or ethanol, the catalytic activity is greatly improved. The activity of the composite catalyst for catalyzing ring-opening copolymerization of carbon dioxide and epoxypropane is greater than 1500g polymer / g catalyst, the number-average molecular weight of the obtained product polycarbonate is greater than 150,000, and the selectivity is greater than 98%. Compared with single use of double metal cyanide or zinc carboxylate, the composite catalyst has remarkable advantages, and is simple in synthesis process, relatively low in cost and very suitable for industrial production of carbon dioxide-based polycarbonate.

The invention relates to a preparation method of easy-to-disperse pigment carbon black, which comprises the following steps: step S1, cracking a petroleum-based composite raw material by adopting an oil furnace incomplete combustion method; s2, sequentially adding an organic potassium carboxylate structure regulator alcohol solution and a polysaccharide modifier aqueous solution in the cracking process of the petroleum-based composite raw material to generate a carbon black aggregate; and S3, carrying out fine treatment on the carbon black aggregate to generate the carbon black. In order to overcome the defects that the pigment carbon black produced in the prior art is lack of polar groups on the surface and is difficult to disperse in practical application, the invention provides the preparation method of the pigment carbon black, which does not need a post-treatment process and has a good dispersion effect.

The invention relates to a method for preparing hexagonal flaky magnesium hydroxide through a hydration modification one-step method, and belongs to the technical field of inorganic material preparation. Hyperbranched sodium polyacrylate containing phosphonic acid and ammonium phosphonate salt is synthesized and serves as a crystal forming agent for magnesium hydroxide crystal growth, the hyperbranched sodium polyacrylate can coordinate with magnesium ions, uniform growth of all crystal faces of the magnesium hydroxide crystal is promoted, and the magnesium hydroxide crystal growth rate is increased. And the hyperbranched structure can better and moderately wrap the formed magnesium hydroxide crystal, so that the uniform growth property of the crystal face is improved. In addition, ammonium phosphate groups and carboxylate in the crystal forming agent have good wetting dispersity, agglomeration of magnesium hydroxide crystals is weakened, and the particle size distribution uniformity is improved. According to the method, the magnesium oxide powder and the crystal forming agent are ground and then subjected to the hydration reaction, the hexagonal flaky magnesium hydroxide is synthesized through a one-step method, and the prepared magnesium hydroxide is in a regular hexagonal flaky shape, has uniform particle size distribution, and has relatively high purity and relatively low impurity content.

The invention relates to a spherical hydrotalcite phase desulfurization adsorbent as well as a preparation method and application thereof, the preparation method comprises the following steps: mixing an iron source, a nickel source and organic carboxylate, and then carrying out hydrothermal carbonization reaction to obtain the spherical hydrotalcite phase desulfurization adsorbent. The nickel source and the iron source are selected as the raw materials, hydroxide radicals of laminates and carbonate ions between the laminates of the prepared hydrotalcite phase desulfurization adsorbent can increase the alkalinity of the surface of the desulfurization adsorbent and improve the adsorption capacity to hydrogen sulfide, and meanwhile, the hydrotalcite phase desulfurization adsorbent can react with hydrogen sulfide in a catalytic oxidation manner, so that the removal efficiency is improved. Organic carboxylate is selected as a hydrothermal auxiliary agent, carboxylate radicals can chelate metal ions through multidentate coordination to form a stable complex, so that the nucleation rate of hydrotalcite is delayed, the particle size uniformity is improved, meanwhile, a carbon coating layer is generated through hydrothermal carbonization, and pores in the carbon coating layer and pores in hydrotalcite can form hierarchical pore channels, so that the composite material is prepared. The mass transfer efficiency is synergistically improved, so that the adsorption capacity of the adsorbent is improved.

The invention discloses a method for quantitatively characterizing the adsorption capacity of carboxylate and hydroximic acid on the surface of a mineral, and belongs to the technical field of mineral flotation separation and detection. The invention aims to provide a method which is simple to operate and good in test repeatability, and solves the problem that the adsorption quantity of each reagent after the carboxylate and hydroximic acid combined reagent is used cannot be quantitatively represented in the current mineral flotation separation. The method mainly comprises the following steps: (1) preparing a mineral sample and a combined reagent; (2) interacting the medicament with the mineral; (3) preparing a sample to be detected; (4) establishing a measurement method; and (5) quantitatively characterizing the adsorption capacity of the medicament. According to the quantitative characterization method provided by the invention, the defect that the adsorption capacity of the mineral, the carboxylate and the hydroximic acid combined medicament cannot be quantitatively characterized after the mineral acts is overcome.

The invention relates to the technical field of reflective coatings, in particular to a facade reflective coating formula, a preparation method and a preparation device.The facade reflective coating formula is prepared from 30-40 parts of epoxy resin, 15-20 parts of glass beads, 10-12 parts of ceramic beads, 6-8 parts of titanium dioxide, 1-2 parts of a polycarboxylate dispersing agent, 0.5-1 part of an organic silicon defoaming agent, 1-2 parts of a hydroxyethyl cellulose thickening agent and 1-2 parts of a silane coupling agent. The facade coating can firmly bond glass bead and ceramic bead reflective materials to form a compact paint film, the reflective characteristic is excellent, the boundary of an object can be clearly marked at night, and the visibility and safety of the object are greatly improved.

The invention belongs to the technical field of fluorine chemical industry, and particularly relates to a method for treating trace perfluoropolyether carboxylic acid and perfluoropolyether acyl fluoride in perfluoropolyether, which comprises the following steps: treating perfluoropolyether containing trace perfluoropolyether carboxylic acid and / or perfluoropolyether acyl fluoride by using a metal compound, converting the perfluoropolyether carboxylic acid and / or perfluoropolyether acyl fluoride into perfluoropolyether carboxylate, and heating and decomposing the perfluoropolyether carboxylate to form trace olefin; and reacting the fluorinating agent diluted by the protective gas with the formed trace olefin to convert the trace olefin into the perfluoropolyether oil. Compared with the prior art, the method solves the problems that in the prior art, a trace amount of perfluoropolyether acyl fluoride and perfluoropolyether carboxylic acid in perfluoropolyether cannot be fully removed, so that an existing product contains acid and is subjected to acid regurgitation in the using process; according to the scheme, complete decomposition and conversion of perfluoropolyether carboxylic acid can be achieved, meanwhile, olefin is prevented from being formed, and the problems that the product contains acid and the acid regurgitation phenomenon in the follow-up using process is solved.

The present disclosure relates to novel lamotrigine salts, co-crystals, and compositions. In some embodiments, the lamotrigine salt is a lamotrigine dicarboxylic acid salt or hydrate or solvate thereof. In some embodiments, the lamotrigine co-crystal is a co-crystal of lamotrigine and a dicarboxylic acid, or a hydrate or solvate thereof. In some embodiments, the compositions comprise lamotrigine or a salt or co-crystal thereof, or a hydrate or solvate thereof. In some embodiments, the composition is in the form of a powder. In some embodiments, the composition is in the form of a liquid. The present disclosure also relates to methods of preparation and use in medical therapy, for example, for the treatment of a subject with epilepsy or bipolar disorder.

The invention discloses a lead-free phosphorus chemical nickel plating solution, and relates to the field of chemical nickel plating, and the lead-free phosphorus chemical nickel plating solution comprises the following components: 6-10 g / L of nickel salt, 5-10 g / L of a complexing agent, 1-5 g / L of a brightener, 5-12 g / L of a reducing agent, 0.6-0.9 g / L of a composite stabilizer, 2-10 g / L of a plating starting agent, 0.1-0.6 g / L of a hydrogen evolution preventing agent and 30-60 mg / L of a surfactant. The adopted plating starting agent is high in decomposition capacity, after the service cycle is increased to 4 MTO, the problem that decomposition products are accumulatively increased to a certain degree to cause blackening of a plating layer can be relieved, 5-6 MTO can be achieved, meanwhile, the adopted composite stabilizer is a composition composed of an aminopyrrole carboxylic ester compound and an aminothiazole carboxylic ester compound, and the composite stabilizer has the beneficial effects of being environmentally friendly and free of pollution. The stability of traditional elements such as lead and cadmium can be improved, and the problem that the service cycle of stabilizers such as benzotriazole or sodium thiosulfate is short can be solved.

The invention discloses a compatible molybdenum-aluminum mixed acid etching solution which comprises the following components in percentage by mass: 4%-7% of nitric acid, 55%-65% of phosphoric acid, 17%-28% of acetic acid, 0.5%-3% of an oxidizing additive, 0.05%-5% of a metal corrosion inhibitor and 10%-20% of deionized water, and the oxidizing additive is ceric nitrate and at least one selected from sodium nitrate, potassium nitrate and ammonium nitrate; the etching liquid does not contain other organic components except for organic carboxylic acid and organic carboxylate. According to the compatible molybdenum-aluminum mixed acid etching solution, on the basis that ceric nitrate is introduced, the content of nitric acid is reduced, the nitrate ion concentration is increased by adding nitrate, the overall oxidation performance of an etching solution system is improved, the etching rate ratio of different metals is adjusted, CD-Bias is reduced, the etching dip angles of a molybdenum single layer and a molybdenum-aluminum laminated layer are controlled to be kept at 20-50 degrees, and the problem of aluminum thorns is solved. The invention further discloses a molybdenum-aluminum etching method based on the compatible molybdenum-aluminum mixed acid etching solution.

The disclosed and claimed subject matter relates to Sn6-oxo clusters with carboxylic acids containing linear ester or cyclic ester (lactone) functional groups, the synthesis thereof, formulations thereof and use thereof in EUV lithography.

A method of forming a zinc oxide / borate nanocomposite that includes mixing a borate solution including boric acid in a polar solvent, and a zinc solution including a zinc carboxylate complex including a zinc ion and a coordinated carboxylate ligand to form a precursor mixture. Further, a polyol is added to the precursor mixture to form a reaction mixture, followed by heating the reaction mixture to 100 to 150° C. to form a solid intermediate product and calcination the solid intermediate product at 500 to 800° C. to form the zinc oxide / borate nanocomposite. The nanocomposite includes Zn3(BO3)2 and ZnO.

The invention relates to the field of synthesis of metal organic composite materials, in particular to an MOF material, a preparation method and application thereof and a CO2 adsorbent. The preparation method comprises the following steps: preparing a first mixed solution containing a neutral ligand, a hydrogen bond acceptor and a hydrogen bond donor; preparing a second mixed solution containing metal salt and a connecting agent; and mixing the second mixed solution with a regulator and the first mixed solution, and carrying out heat treatment to obtain the MOF material, the regulator comprises at least one of carboxylic acid and carboxylate. The MOF material with good structural performance is obtained, the preparation method has high adjustability in important structural parameters such as surface area, pore volume and average pore size, meanwhile, additional metal sites and acid / alkaline sites are reserved, the MOF material can be used for CO2 adsorption, and the adsorption capacity of CO2 is remarkably improved.

Disclosed are biodegradable polyesters. Methods for their production and adhesives prepared therefrom. The polyesters comprise a plurality of adducts of two dicarboxylates or anhydrides with a compound having at least two fused ring heterocycles containing a heteroatom and a hydroxyl group pendant from each ring, the adducts are linked by the residues of one or more diols of alkylene diols or polyoxyalkylene diols and a plurality of one or more aliphatic diols containing a pendant carboxylate group. Ester groups are formed by reaction of the hydroxyl groups of the fused ring compounds and the diols with the carboxylate groups of the dicarboxylates and the composition contains pendant carboxylate groups, wherein the composition contains two dicarboxylates, a first dicarboxylate or an anhydride containing between the carboxylate or carboxyl groups a C1-8 hydrocarbylene group and a second dicarboxylate containing between the carboxylate groups a C9-60 hydrocarbylene group.

Described herein are crystalline forms of the MAGL inhibitor 1,1,1,3,3,3-Hexafluoropropan-2-yl(S)-1-(pyridazin-3-ylcarbamoyl)-6-azaspiro[2.5]octane-6-carboxylate.

Polyisocyanurate foam-forming compositions, polyisocyanurate foams, insulated assemblies, and method of making thereof are provided. The polyisocyanurate foam-forming composition comprises an organic polyisocyanate and an isocyanate-reactive composition. The isocyanate-reactive composition comprises a polyether polyol or polyester polyol with a nominal hydroxyl functionality of at least 2.0, a blowing agent composition, a trimerization catalyst composition, and a surfactant. The blowing agent is present in an amount sufficient to produce a polyisocyanurate foam from the isocyanate-reactive composition that has a density of less than 1.8 lb / ft3 (28.8 kg / m3). The blowing agent composition comprises a hydrocarbon or hydrocarbon blend in an amount of at least 6% by weight and water in an amount less than 0.2% by weight. The trimerization catalyst composition comprises an alkali metal carboxylate or an alkaline metal carboxylate and a solvent that is not isocyanate-reactive.

The invention belongs to the technical field of polyoxyethylene ether production, and particularly relates to a pyrrolidine compound polyoxyethylene ether composition and a preparation method thereof.The reaction speed is further increased and N-hydroxyethyl pyrrolidine is prevented from being oxidized and discolored by adopting a negative-pressure feeding mode in a reactor, so that the yield of N-hydroxyethyl pyrrolidine is increased, and the production cost is reduced. The pyrrolidine polyoxyethylene ether composition is prepared by mixing pyrrolidine polyoxyethylene ether with different polymerization numbers, pyrrolidine polyoxyethylene ether sodium sulfate and pyrrolidine polyoxyethylene ether sodium carboxylate according to a certain mass ratio, and the proportion of pyrrolidine polyoxyethylene ether with different lengths can be adjusted in the composition. The balance of hydrophilicity and hydrophobicity is changed, so that excellent hydrophobic-hydrophilic, dispersion and wettability properties are realized.

The invention discloses a method for selectively and efficiently removing impurities in desulfurized gypsum and preparing high-quality alpha-semi-hydrated gypsum, which comprises the following steps: (1) removing organic impurities in the desulfurized gypsum by utilizing flotation, then removing soluble impurities by washing, and aerating air to oxidize calcium sulfite into calcium sulfate dihydrate while washing, then carrying out acid leaching in a hydrochloric acid solution to remove insoluble impurities, taking out and drying to obtain treated desulfurized gypsum; and (2) adding the desulfurized gypsum treated in the step (1) into a carboxylic acid aqueous solution to carry out solution crystallization reaction, adding potassium carboxylate into the carboxylic acid aqueous solution to regulate and control the crystallization rate and crystal morphology, carrying out solid-liquid separation after the reaction is finished, and washing, drying and ball-milling the solid to obtain the high-quality alpha-semi-hydrated gypsum powder. The alpha-semi-hydrated gypsum product obtained by the invention is high in purity, and the hydrated body has high absolute dry compressive and flexural strength.

The invention provides carbon sequestration concrete and a preparation method thereof, and relates to the technical field of building materials. The carbon sequestration concrete provided by the invention is prepared from the following preparation raw materials in parts by mass: 280 to 320 parts of cement, 40 to 50 parts of mineral powder, 50 to 60 parts of fly ash, 650 to 700 parts of machine-made sand, 200 to 240 parts of natural sand, 750 to 850 parts of large stone, 150 to 170 parts of small stone, 3.8 to 4.5 parts of a water reducing agent, 0.15 to 0.85 part of a retarder, 4 to 20 parts of sodium carboxylate and 180 to 200 parts of water. Sodium carboxylate is introduced as a carbon sequestration aid, carboxylate radical groups of sodium carboxylate can efficiently complex calcium ions released by cement hydration to form a soluble calcium carboxylate complex, so that the chemical reaction that carbon dioxide is mineralized into calcium carbonate is accelerated, the carbon dioxide absorption capacity of concrete is remarkably improved, and the carbon sequestration efficiency is improved. The carbon sequestration concrete provided by the invention has high carbon sequestration performance and excellent mechanical properties.

Described herein are pharmaceutical formulations of a farnesoid X receptor agonist, 4-((4-(1-(tert-butyl)-1H-pyrazol-4-yl)pyridin-2-yl)((4-(4-methoxy-3-methylphenyl)bicyclo[2.2.2]octan-1-yl)methyl)carbamoyl)cyclohexyl 3-hydroxyazetidine-trans-1-carboxylate, and methods of using such pharmaceutical formulations in the treatment of conditions, diseases, or disorders associated with farnesoid X receptor activity.

The invention discloses a brominated flame-retardant polyamide composition capable of improving air trapping. The brominated flame-retardant polyamide composition comprises the following components in percentage by mass: 30.0-80.0 wt% of aliphatic polyamide; 10 to 30.0 wt% of a brominated flame retardant; 3.0 to 10.0 wt% of a flame retardant synergist; 0.3 to 5.0 wt% of aromatic zinc carboxylate; or also comprises the following components: 5.0-50.0 wt% of a reinforcing agent; the sum of all the components is 100 wt%, and the composite material is prepared by melt blending and processing through a single-screw or double-screw extruder. According to the brominated flame-retardant polyamide composition disclosed by the invention, the defect that the fire resistance of a thermoplastic composition is influenced by an acid remover and zinc oxide is avoided by utilizing the aromatic zinc carboxylate, the air trapping phenomenon can be obviously improved, and the brominated flame-retardant polyamide composition has stable flame retardance and excellent mechanical property.

The present invention refers to a metal carboxylate for deodorizing applications obtained by reacting at least one hydrophilic compound with at least one carbonyl compound, to form an intermediate compound having at least one free carboxylic acid group, and subsequently adding at least one metal compound to said intermediate compound to form said metal carboxylate. The use of the metal carboxylate as an odor-inhibition agent in cosmetics, household products, detergents and in technical applications is further proposed. In addition, a method for producing the metal carboxylate is disclosed herein.

The invention relates to an SNCR (selective non-catalytic reduction) denitration synergist, a denitration composition and a denitration method. The SNCR denitration synergist comprises an organic solvent and alkali metal carboxylate, the mass ratio of the organic solvent to the alkali metal carboxylate is (0.1-1): 1, and the organic solvent is selected from one or more of alcohol, ketone, ether and aldehyde. The alkali metal carboxylate is selected from at least one of formate, acetate, citrate, oxalate, ascorbate and tartrate of alkali metal. According to the SNCR denitration synergist, the denitration efficiency can be remarkably improved in a medium and low temperature interval (600-800 DEG C), ammonia escape is reduced, and secondary pollution is reduced.

Disclosed are biodegradable polyesters prepared from bio sourced materials and methods for their production. The polyesters comprise a plurality of adducts of two dicarboxylates or anhydrides with a compound having at least two fused ring heterocycles wherein each heterocycle contains a heteroatom of oxygen or sulfur and at least one hydroxyl group pendant from each ring. wherein the plurality of adducts are linked by a plurality of residues of one or more diols of alkylene diols or polyoxyalkylene diols and a plurality of one or more aliphatic diols containing a pendant carboxylate group wherein ester groups are formed by reaction of the hydroxyl groups of the fused ring compounds and the diols with the carboxylate groups of the dicarboxylates and the composition contains pendant carboxylate groups.

To form a resist pattern having good line edge roughness (LER).SOLUTION: A carboxylic acid generator contains a carboxylate represented by formula (I).SELECTED DRAWING: None